./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_abb98ed6-ea98-4d4d-a59b-155dc0e07293/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_abb98ed6-ea98-4d4d-a59b-155dc0e07293/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_abb98ed6-ea98-4d4d-a59b-155dc0e07293/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_abb98ed6-ea98-4d4d-a59b-155dc0e07293/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_abb98ed6-ea98-4d4d-a59b-155dc0e07293/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_abb98ed6-ea98-4d4d-a59b-155dc0e07293/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d8b744fb7e17d1e6c804d008ab76489d2d72401 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 10:07:28,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:07:28,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:07:28,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:07:28,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:07:28,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:07:28,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:07:28,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:07:28,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:07:28,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:07:28,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:07:28,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:07:28,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:07:28,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:07:28,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:07:28,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:07:28,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:07:28,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:07:28,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:07:28,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:07:28,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:07:28,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:07:28,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:07:28,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:07:28,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:07:28,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:07:28,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:07:28,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:07:28,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:07:28,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:07:28,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:07:28,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:07:28,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:07:28,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:07:28,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:07:28,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:07:28,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:07:28,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:07:28,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:07:28,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:07:28,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:07:28,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_abb98ed6-ea98-4d4d-a59b-155dc0e07293/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 10:07:28,745 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:07:28,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:07:28,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:07:28,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:07:28,746 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:07:28,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:07:28,746 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:07:28,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:07:28,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:07:28,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:07:28,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:07:28,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:07:28,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:07:28,747 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:07:28,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:07:28,747 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:07:28,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:07:28,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:07:28,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:07:28,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:07:28,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:07:28,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:07:28,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:07:28,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:07:28,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:07:28,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 10:07:28,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:07:28,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:07:28,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:07:28,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_abb98ed6-ea98-4d4d-a59b-155dc0e07293/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d8b744fb7e17d1e6c804d008ab76489d2d72401 [2019-12-07 10:07:28,848 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:07:28,858 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:07:28,861 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:07:28,862 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:07:28,862 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:07:28,863 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_abb98ed6-ea98-4d4d-a59b-155dc0e07293/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i [2019-12-07 10:07:28,909 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_abb98ed6-ea98-4d4d-a59b-155dc0e07293/bin/uautomizer/data/c3f09015a/3d74d6e69c7f47f7a7c84aa0ce45f507/FLAGd570dece7 [2019-12-07 10:07:29,313 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:07:29,313 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_abb98ed6-ea98-4d4d-a59b-155dc0e07293/sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i [2019-12-07 10:07:29,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_abb98ed6-ea98-4d4d-a59b-155dc0e07293/bin/uautomizer/data/c3f09015a/3d74d6e69c7f47f7a7c84aa0ce45f507/FLAGd570dece7 [2019-12-07 10:07:29,686 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_abb98ed6-ea98-4d4d-a59b-155dc0e07293/bin/uautomizer/data/c3f09015a/3d74d6e69c7f47f7a7c84aa0ce45f507 [2019-12-07 10:07:29,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:07:29,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:07:29,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:07:29,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:07:29,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:07:29,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:07:29" (1/1) ... [2019-12-07 10:07:29,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a891328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:29, skipping insertion in model container [2019-12-07 10:07:29,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:07:29" (1/1) ... [2019-12-07 10:07:29,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:07:29,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:07:29,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:07:29,980 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:07:30,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:07:30,056 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:07:30,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:30 WrapperNode [2019-12-07 10:07:30,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:07:30,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:07:30,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:07:30,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:07:30,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:30" (1/1) ... [2019-12-07 10:07:30,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:30" (1/1) ... [2019-12-07 10:07:30,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:07:30,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:07:30,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:07:30,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:07:30,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:30" (1/1) ... [2019-12-07 10:07:30,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:30" (1/1) ... [2019-12-07 10:07:30,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:30" (1/1) ... [2019-12-07 10:07:30,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:30" (1/1) ... [2019-12-07 10:07:30,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:30" (1/1) ... [2019-12-07 10:07:30,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:30" (1/1) ... [2019-12-07 10:07:30,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:30" (1/1) ... [2019-12-07 10:07:30,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:07:30,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:07:30,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:07:30,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:07:30,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_abb98ed6-ea98-4d4d-a59b-155dc0e07293/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:07:30,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 10:07:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 10:07:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 10:07:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 10:07:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 10:07:30,148 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 10:07:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 10:07:30,148 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 10:07:30,149 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 10:07:30,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 10:07:30,149 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-12-07 10:07:30,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-12-07 10:07:30,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 10:07:30,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:07:30,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:07:30,150 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 10:07:30,342 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:07:30,343 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 10:07:30,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:07:30 BoogieIcfgContainer [2019-12-07 10:07:30,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:07:30,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:07:30,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:07:30,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:07:30,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:07:29" (1/3) ... [2019-12-07 10:07:30,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11cb09cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:07:30, skipping insertion in model container [2019-12-07 10:07:30,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:07:30" (2/3) ... [2019-12-07 10:07:30,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11cb09cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:07:30, skipping insertion in model container [2019-12-07 10:07:30,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:07:30" (3/3) ... [2019-12-07 10:07:30,350 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_pso.opt.i [2019-12-07 10:07:30,358 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 10:07:30,358 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:07:30,362 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 10:07:30,363 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 10:07:30,383 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,383 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,383 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,383 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,384 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,384 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,384 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,384 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,384 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,384 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,384 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,385 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,385 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,385 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,385 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,385 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,385 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,385 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,386 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,386 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,386 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,386 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,386 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,386 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:07:30,403 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-07 10:07:30,415 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:07:30,415 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:07:30,415 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:07:30,415 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:07:30,415 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:07:30,415 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:07:30,416 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:07:30,416 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:07:30,427 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 64 transitions [2019-12-07 10:07:30,429 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 64 transitions [2019-12-07 10:07:30,458 INFO L134 PetriNetUnfolder]: 1/60 cut-off events. [2019-12-07 10:07:30,458 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 10:07:30,462 INFO L76 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs. 12/70 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-12-07 10:07:30,465 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 64 transitions [2019-12-07 10:07:30,480 INFO L134 PetriNetUnfolder]: 1/60 cut-off events. [2019-12-07 10:07:30,480 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 10:07:30,482 INFO L76 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs. 12/70 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-12-07 10:07:30,483 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 732 [2019-12-07 10:07:30,484 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 10:07:31,353 INFO L206 etLargeBlockEncoding]: Checked pairs total: 721 [2019-12-07 10:07:31,353 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2019-12-07 10:07:31,356 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 19 transitions [2019-12-07 10:07:31,366 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 94 states. [2019-12-07 10:07:31,367 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2019-12-07 10:07:31,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 10:07:31,372 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:31,373 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:31,373 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:31,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:31,377 INFO L82 PathProgramCache]: Analyzing trace with hash -989464989, now seen corresponding path program 1 times [2019-12-07 10:07:31,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:31,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057510306] [2019-12-07 10:07:31,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:31,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057510306] [2019-12-07 10:07:31,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:31,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 10:07:31,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846989069] [2019-12-07 10:07:31,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 10:07:31,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:31,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 10:07:31,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:07:31,620 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2019-12-07 10:07:31,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:31,653 INFO L93 Difference]: Finished difference Result 124 states and 283 transitions. [2019-12-07 10:07:31,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 10:07:31,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 10:07:31,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:31,665 INFO L225 Difference]: With dead ends: 124 [2019-12-07 10:07:31,665 INFO L226 Difference]: Without dead ends: 92 [2019-12-07 10:07:31,666 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:07:31,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-12-07 10:07:31,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2019-12-07 10:07:31,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-12-07 10:07:31,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 194 transitions. [2019-12-07 10:07:31,707 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 194 transitions. Word has length 10 [2019-12-07 10:07:31,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:31,708 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 194 transitions. [2019-12-07 10:07:31,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 10:07:31,709 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 194 transitions. [2019-12-07 10:07:31,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 10:07:31,710 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:31,710 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:31,710 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:31,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:31,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1170715911, now seen corresponding path program 1 times [2019-12-07 10:07:31,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:31,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119297285] [2019-12-07 10:07:31,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:31,781 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119297285] [2019-12-07 10:07:31,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:31,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:07:31,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47649779] [2019-12-07 10:07:31,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:07:31,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:31,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:07:31,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:31,783 INFO L87 Difference]: Start difference. First operand 86 states and 194 transitions. Second operand 4 states. [2019-12-07 10:07:31,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:31,797 INFO L93 Difference]: Finished difference Result 80 states and 175 transitions. [2019-12-07 10:07:31,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:07:31,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 10:07:31,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:31,798 INFO L225 Difference]: With dead ends: 80 [2019-12-07 10:07:31,798 INFO L226 Difference]: Without dead ends: 76 [2019-12-07 10:07:31,799 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:31,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-12-07 10:07:31,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2019-12-07 10:07:31,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-12-07 10:07:31,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 163 transitions. [2019-12-07 10:07:31,805 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 163 transitions. Word has length 11 [2019-12-07 10:07:31,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:31,806 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 163 transitions. [2019-12-07 10:07:31,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:07:31,806 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 163 transitions. [2019-12-07 10:07:31,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 10:07:31,806 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:31,807 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:31,807 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:31,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:31,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1709122238, now seen corresponding path program 1 times [2019-12-07 10:07:31,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:31,807 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090166958] [2019-12-07 10:07:31,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:31,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090166958] [2019-12-07 10:07:31,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:31,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:07:31,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397555721] [2019-12-07 10:07:31,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:07:31,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:31,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:07:31,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:31,863 INFO L87 Difference]: Start difference. First operand 76 states and 163 transitions. Second operand 4 states. [2019-12-07 10:07:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:31,878 INFO L93 Difference]: Finished difference Result 78 states and 162 transitions. [2019-12-07 10:07:31,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:07:31,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-07 10:07:31,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:31,879 INFO L225 Difference]: With dead ends: 78 [2019-12-07 10:07:31,879 INFO L226 Difference]: Without dead ends: 66 [2019-12-07 10:07:31,880 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:31,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-12-07 10:07:31,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2019-12-07 10:07:31,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 10:07:31,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 124 transitions. [2019-12-07 10:07:31,884 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 124 transitions. Word has length 12 [2019-12-07 10:07:31,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:31,884 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 124 transitions. [2019-12-07 10:07:31,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:07:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 124 transitions. [2019-12-07 10:07:31,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 10:07:31,885 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:31,885 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:31,885 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:31,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1707570409, now seen corresponding path program 1 times [2019-12-07 10:07:31,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:31,886 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482297749] [2019-12-07 10:07:31,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:31,929 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482297749] [2019-12-07 10:07:31,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:31,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:07:31,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31674510] [2019-12-07 10:07:31,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:07:31,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:31,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:07:31,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:31,930 INFO L87 Difference]: Start difference. First operand 58 states and 124 transitions. Second operand 4 states. [2019-12-07 10:07:31,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:31,940 INFO L93 Difference]: Finished difference Result 64 states and 133 transitions. [2019-12-07 10:07:31,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:07:31,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-07 10:07:31,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:31,941 INFO L225 Difference]: With dead ends: 64 [2019-12-07 10:07:31,941 INFO L226 Difference]: Without dead ends: 64 [2019-12-07 10:07:31,941 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:31,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-12-07 10:07:31,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2019-12-07 10:07:31,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-07 10:07:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 119 transitions. [2019-12-07 10:07:31,945 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 119 transitions. Word has length 12 [2019-12-07 10:07:31,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:31,945 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 119 transitions. [2019-12-07 10:07:31,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:07:31,945 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 119 transitions. [2019-12-07 10:07:31,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 10:07:31,946 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:31,946 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:31,946 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:31,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:31,946 INFO L82 PathProgramCache]: Analyzing trace with hash 203952685, now seen corresponding path program 1 times [2019-12-07 10:07:31,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:31,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591466764] [2019-12-07 10:07:31,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:32,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:32,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591466764] [2019-12-07 10:07:32,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:32,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 10:07:32,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657857234] [2019-12-07 10:07:32,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 10:07:32,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:32,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 10:07:32,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-12-07 10:07:32,014 INFO L87 Difference]: Start difference. First operand 56 states and 119 transitions. Second operand 7 states. [2019-12-07 10:07:32,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:32,073 INFO L93 Difference]: Finished difference Result 56 states and 117 transitions. [2019-12-07 10:07:32,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 10:07:32,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-12-07 10:07:32,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:32,074 INFO L225 Difference]: With dead ends: 56 [2019-12-07 10:07:32,074 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 10:07:32,074 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-12-07 10:07:32,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 10:07:32,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-12-07 10:07:32,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-12-07 10:07:32,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 86 transitions. [2019-12-07 10:07:32,077 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 86 transitions. Word has length 13 [2019-12-07 10:07:32,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:32,077 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 86 transitions. [2019-12-07 10:07:32,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 10:07:32,077 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 86 transitions. [2019-12-07 10:07:32,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 10:07:32,078 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:32,078 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:32,078 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:32,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:32,078 INFO L82 PathProgramCache]: Analyzing trace with hash -750961992, now seen corresponding path program 1 times [2019-12-07 10:07:32,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:32,078 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821130343] [2019-12-07 10:07:32,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:32,119 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821130343] [2019-12-07 10:07:32,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:32,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:07:32,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081827969] [2019-12-07 10:07:32,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:07:32,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:32,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:07:32,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:07:32,120 INFO L87 Difference]: Start difference. First operand 44 states and 86 transitions. Second operand 5 states. [2019-12-07 10:07:32,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:32,135 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2019-12-07 10:07:32,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:07:32,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 10:07:32,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:32,136 INFO L225 Difference]: With dead ends: 53 [2019-12-07 10:07:32,136 INFO L226 Difference]: Without dead ends: 32 [2019-12-07 10:07:32,136 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 10:07:32,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-07 10:07:32,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-07 10:07:32,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 10:07:32,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 53 transitions. [2019-12-07 10:07:32,139 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 53 transitions. Word has length 14 [2019-12-07 10:07:32,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:32,139 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 53 transitions. [2019-12-07 10:07:32,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:07:32,139 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 53 transitions. [2019-12-07 10:07:32,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 10:07:32,140 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:32,140 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:32,140 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:32,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:32,141 INFO L82 PathProgramCache]: Analyzing trace with hash -582345356, now seen corresponding path program 2 times [2019-12-07 10:07:32,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:32,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440840537] [2019-12-07 10:07:32,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:32,187 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440840537] [2019-12-07 10:07:32,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:32,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 10:07:32,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907754821] [2019-12-07 10:07:32,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:07:32,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:32,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:07:32,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:07:32,189 INFO L87 Difference]: Start difference. First operand 32 states and 53 transitions. Second operand 5 states. [2019-12-07 10:07:32,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:32,204 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2019-12-07 10:07:32,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 10:07:32,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 10:07:32,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:32,204 INFO L225 Difference]: With dead ends: 35 [2019-12-07 10:07:32,204 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 10:07:32,205 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 10:07:32,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 10:07:32,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 10:07:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 10:07:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 38 transitions. [2019-12-07 10:07:32,206 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 38 transitions. Word has length 14 [2019-12-07 10:07:32,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:32,207 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 38 transitions. [2019-12-07 10:07:32,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:07:32,207 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 38 transitions. [2019-12-07 10:07:32,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 10:07:32,207 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:32,207 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:32,207 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:32,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:32,207 INFO L82 PathProgramCache]: Analyzing trace with hash -532613606, now seen corresponding path program 3 times [2019-12-07 10:07:32,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:32,208 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572776068] [2019-12-07 10:07:32,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:32,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572776068] [2019-12-07 10:07:32,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:32,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:07:32,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461374749] [2019-12-07 10:07:32,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:07:32,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:32,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:07:32,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:32,233 INFO L87 Difference]: Start difference. First operand 26 states and 38 transitions. Second operand 4 states. [2019-12-07 10:07:32,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:32,245 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2019-12-07 10:07:32,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:07:32,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 10:07:32,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:32,245 INFO L225 Difference]: With dead ends: 28 [2019-12-07 10:07:32,245 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 10:07:32,246 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:07:32,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 10:07:32,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 10:07:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 10:07:32,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-12-07 10:07:32,247 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2019-12-07 10:07:32,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:32,247 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-12-07 10:07:32,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:07:32,247 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-12-07 10:07:32,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 10:07:32,247 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:07:32,247 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:07:32,248 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:07:32,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:07:32,248 INFO L82 PathProgramCache]: Analyzing trace with hash -245617918, now seen corresponding path program 4 times [2019-12-07 10:07:32,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:07:32,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292514641] [2019-12-07 10:07:32,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:07:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:07:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:07:32,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292514641] [2019-12-07 10:07:32,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:07:32,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:07:32,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143819339] [2019-12-07 10:07:32,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:07:32,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:07:32,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:07:32,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:07:32,273 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2019-12-07 10:07:32,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:07:32,281 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-12-07 10:07:32,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:07:32,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 10:07:32,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:07:32,282 INFO L225 Difference]: With dead ends: 16 [2019-12-07 10:07:32,282 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 10:07:32,282 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:07:32,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 10:07:32,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 10:07:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 10:07:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 10:07:32,282 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-12-07 10:07:32,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:07:32,282 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 10:07:32,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:07:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 10:07:32,283 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 10:07:32,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:07:32 BasicIcfg [2019-12-07 10:07:32,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:07:32,285 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:07:32,286 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:07:32,286 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:07:32,286 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:07:30" (3/4) ... [2019-12-07 10:07:32,288 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 10:07:32,293 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 10:07:32,293 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 10:07:32,293 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 10:07:32,293 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-12-07 10:07:32,296 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-12-07 10:07:32,296 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 10:07:32,296 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 10:07:32,325 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_abb98ed6-ea98-4d4d-a59b-155dc0e07293/bin/uautomizer/witness.graphml [2019-12-07 10:07:32,326 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:07:32,327 INFO L168 Benchmark]: Toolchain (without parser) took 2637.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 935.5 MB in the beginning and 949.2 MB in the end (delta: -13.8 MB). Peak memory consumption was 74.8 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:32,327 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:07:32,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 935.5 MB in the beginning and 1.1 GB in the end (delta: -125.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:32,328 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:07:32,328 INFO L168 Benchmark]: Boogie Preprocessor took 17.75 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:32,329 INFO L168 Benchmark]: RCFGBuilder took 236.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:32,329 INFO L168 Benchmark]: TraceAbstraction took 1940.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 951.0 MB in the end (delta: 82.5 MB). Peak memory consumption was 82.5 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:32,329 INFO L168 Benchmark]: Witness Printer took 40.19 ms. Allocated memory is still 1.1 GB. Free memory was 951.0 MB in the beginning and 949.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 10:07:32,331 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 367.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.6 MB). Free memory was 935.5 MB in the beginning and 1.1 GB in the end (delta: -125.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.75 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 236.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1940.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 951.0 MB in the end (delta: 82.5 MB). Peak memory consumption was 82.5 MB. Max. memory is 11.5 GB. * Witness Printer took 40.19 ms. Allocated memory is still 1.1 GB. Free memory was 951.0 MB in the beginning and 949.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 76 ProgramPointsBefore, 27 ProgramPointsAfterwards, 64 TransitionsBefore, 19 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 354 VarBasedMoverChecksPositive, 15 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 16 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 721 CheckedPairsTotal, 48 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 64 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 131 SDtfs, 121 SDslu, 133 SDs, 0 SdLazy, 88 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 7219 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...